The term “arc flash” is used to describe low impedance connections in an electrical system, which allows movement of unwanted electric discharge through the air from one voltage phase to another, or to ground. This leads to a rapid rise in temperature and pressure in the air between electrical conductors, causing an explosion known as an arc blast.

Arc blasts and the resulting heat can lead to fires, pressure waves and flying shrapnel that result in serious damage to life and property. These explosions typically occur without any warning, destroy electrical equipment completely and lead to severe injury or death of personnel present within the boundary of the arc flash.

What Are the Main Causes of Arc Flash?

Arc flash occurs when several electrical conductors are placed close to each other, with significant fault currents flowing through them. In this situation, ionization of the air can take place as a result of various factors – such as differences in potential – which leads to a low resistance path and allows current to flow through the air gap between conductors.

Many people assume that low voltage equipment is safe from arc flash, but arc flash hazard levels may be higher at low voltages, due to the high fault currents. Most incidents that occur in low voltage systems are caused by human error, e.g. a tool slipping while a technician works on electrical equipment.

Arc flash can also be caused due to:

Every home has a fire detection system. This vital safety feature should be well understood. Smoke detectors, carbon monoxide detectors and security systems give homeowners peace-of-mind. Furthermore, when combined with a security system, these devices work together to form a complete home protection plan.

The second type of detector is an ionization detector. It uses a small amount of radioactive material to ionize the air in an internal chamber. This in turn, generates a voltage that can be measured. By-products of combustion will change the voltage that is generated and trigger the alarm. This type of detector is better at identifying active combustion with little to no smoke.

While both types of smoke detectors will safely alert a homeowner to a fire, combination alarms exist that employ both methods. Consequently, the responsiveness of the whole system increases. Hard-wired detectors are also available which can be wired to trigger all the alarms in a home if anyone detects a problem.

In any appliance that uses combustion, such as a furnace or stove top, a potential exists for hazardous carbon monoxide buildup. This by-product is tasteless, odorless, colorless, and highly toxic in large concentrations. Therefore, a carbon monoxide detector is highly recommended. It will monitor the levels of CO in the air and alert inhabitants before they become dangerous. They are available as stand-alone units that can be plugged in to standard wall outlets or as combination roof-mounted CO and smoke detectors.

Home security systems have been around for decades and make use of a combination of sensors including door, window, glass-break, and motion sensors. Historically, these devices were hard-wired and fed back to a central control panel. Many modern systems make use of wireless sensors that allow for easy retrofitting of existing homes. Door and window sensors utilize a small magnet and magnetic strip held open when the door or window closes. If the magnet is moved away, the magnetic strip springs closed and triggers the alarm.

Glass-break sensors are placed near windows and use a microphone to listen for the distinctive frequencies associated with glass breaking. Motion detectors take advantage of a variety of technologies, such as passive infrared, microwave, or ultrasonic. This technology detects something moving within its range. These can be part of exterior security lights or interior motion sensors. Security cameras can also play a role in home security. Install them indoors or outdoors.

When installed and used properly, a home security system can easily increase home safety while reducing the chances of burglary or fire. Most insurance companies offer discounts for home security systems. Because of this, the entire cost of the system may be offset or eliminated altogether. Be sure to ask your insurance company about discounts to homeowner’s insurance for improving or installing a new security system.

Prefabs provide on-site, off-site and other hidden advantages. For instance, faster installation at the job site reduces the project duration. Prefabs have the potential of cutting the installation time by almost a half. In addition, the project will require fewer workers in the field resulting in a big reduction in labor costs and improved profitability.

There’s also a significant savings on labor, which can be very expensive and in short supply. The prefabrication process is considered more of a manufacturing function so the contractor is able to achieve success with fewer workers. The workshop can make use of semi-skilled workers and apprentices, unlike a construction site where an electrician is required to perform the installation.

Fewer materials and less activity at a job site mean that the project is completed faster with a reduced opportunity for accidents and delays. In addition, by delivering all the individual components to the workshop for assembly, the level of material handling is narrowed. This equates to an easy-to-manage supply chain. Fewer materials reduce clutter, waste disposal, and the need for extra storage space.

The workshop provides the best environment for producing the assembly fast without the interruptions that might be found at a construction job site. Further, the production of prefabs is not affected as much by delays from other trades, bad weather, and other construction project hold-ups.

Electricians spend less time working at dangerous heights and precarious positions, hence reducing safety risks. Prefabs allow contractors to reduce the need for as many licensed electricians on the job site. This can result in greater productivity and profitability.

Increased competition and high labor costs have caused declining profits for many electrical contractors. However, with the use of prefabs, profitability can be improved by reducing the labor and time spent at the construction site. Additionally, fabricating electrical assemblies in a workshop makes it easier to stay on budget and hit your project timelines.

The days are getting shorter, the leaves are piling up higher and there’s a hint of pumpkin spice in the air. This can mean only one thing – Fall is near. This change in weather patterns and temperature will undoubtedly bring new challenges to electrical safety around the household. In order to stay safe and get the most out of your fall electrical services, please take advantage of the following 5 Expert Electric tips for Fall:

Although nobody enjoys the packing and storage of their Spring and Summer electrical household items, it’s a necessary chore that helps significantly protect the household from unnecessary electrical hazards. When packing up these electrical items, it’s imperative that they are stored safely and strategically in order to protect them from severe weather conditions. This includes warm weather tools such as lawn mowers, trimmers or any other electrical devices. It is also important to drain these household items of any leftover gas or fuel.

For outdoor projects that require electrical equipment, it is necessary to ensure that the equipment is weatherproof. Any lawn mowers, leaf blowers or other equipment should be able to withstand the cold weather, rain or snow that often comes with Fall. If you’re unsure whether or not your electrical tools are weatherproof, feel free to contact our team of electricians at Expert Electric.

Dry leaves are often overlooked as an electrical danger. To ensure your household’s safety in Fall, keep all dry leaves away from any electrical equipment including lighting, cords and outlets. Make this part of your household routine and get into the habit of cleaning up all the dry leaves.

It’s best to get an early start on this tip and get it out of the way before the cold weather and rain roll in. Set aside a couple of hours on the weekend to inspect all outdoor electrical wiring and cords to ensure they are damage-free. Even a small rip or tear in an electrical cord can make any devices susceptible to danger.

Since you will already be setting aside some time to inspect your electrical wiring and cords, take a few hours to also review all outdoor electrical equipment for any damage. This includes pools, hot tubs, saunas and more. Ensure that all of the equipment is operating properly and that any damage is fully addressed and handled before severe weather conditions roll through.

Have any questions about fall safety tips or electrical services? Expert Electric has all the answers! Please visit out contact page for a local number near you or fill out one of our online forms.  The Expert Electric team of licensed electricians is here to ensure all of your fall electrical projects are handled safely and efficiently.